Taxonomy is the practice and science of classification. The word is also used as a
Many taxonomies have a
Wikipedia categories illustrate a taxonomy and a full taxonomy of Wikipedia categories can be extracted by automatic means. As of 2009, it has been shown that a manually-constructed taxonomy, such as that of computational lexicons like
In a broader sense, taxonomy also applies to relationship schemes other than parent-child hierarchies, such as
Mathematically, a hierarchical taxonomy is a
By contrast, in the context of legal terminology, an open-ended contextual taxonomy is employed—a taxonomy holding only with respect to a specific context. In scenarios taken from the legal domain, a formal account of the open-texture of legal terms is modeled, which suggests varying notions of the "core" and "penumbra" of the meanings of a concept. The progress of reasoning proceeds from the specific to the more general.